Firing-tool.



F. c. KRAMER'.

FIRING TOOL.

APPLICATION FILED DEC. 7. ISI-I.

1 ,l 99,010. Patented Sept. 19,1916.

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NITED STATES VPAJIEll'l OFFICE.

FREDERICK C. KRAMER, OF CHICAGO, ILLINOIS.

'Frame-TOOL.

' Application filed December 7, 1914.

To all A1J/tom' t may concern Be it known that I, F nnoninon G. KRAMER,a `citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Firing-Tools; 'and I hereby declare thaty the followingis a full, clear, and exact 4description thereof, reference being had tothe accompanying drawings, which form part of this specification.

My invention relates to lire tools, and its object is to provide meansfor firmly clamping` a lire tool to its handle.

The invention is particularly designed for use in connection with slicebars or other iii-ing tool, which is provided with the properly formedsocketed shank for the engagement of the handle as hereinafter'explained. By the invention the handle is securely attached to the toolby means of a split clamping ring adapted to slip over the handle andengage the tapered end of the socket in the shank of the fire tool, saidsplit ring being forced inward by means of a sleeve adapted to slip ontothe handle and o-ver the clamping ring and screw onto the threaded endof the shank, and as such sleeve is screwed on .the shank it forces theclamping ring into the socket and the tapered surfaces cause the ring tobind the handle tightly and efectually prevent the handle from workingloose or unscrewing, and make a firm and rigid connection between thehandle and tool.

I will explain the invention in detail with reference to theaccompanying drawings in which it is illustrated in connection with anordinary slice bar.

In said drawings: Figure l is a side View showing the means forattaching the handle to a firing tool. Fig. Q is an enlargedlongitudinal sectional view through Fig. l. Fig. 3 is a transversesection on the line 3-3, Fig. 2. Figs. 4- and 5 are perspective views ofthe clamp member and sleeve detached.

The tool l is shown as a slice bar but may be of any desiredconstruction, and is provided with a tubular shank 'li1 which may beinternally threaded at its bottom as shown at lb for the engagement ofthe lower threaded end 4a of a handle 4, which is preferably made of rodsteel or iron pipe and corresponds in exterior diameter with theinterior diameter of the socket la, and has its inner end Lla threadedand engaged with the threaded portion lb of the socket ThuS.

Specification 0f Letters Patent.

Paeentedsepe-19, 191e.

Serial N0. 875,922.

far the construction is ordinary, and the objection to such ordinaryconstruction is that the handle soon works loose, and the tool isthen4apt to become disengaged or broken ofi' while in use, causing a greatdeal of trouble and annoyance to the operator. Various means have beentried to prevent turning ofthe-handle, 'such as screws tapped vth'roughthe socket'to engage the handle, but

they have all been more or less objectionablegeand it is quite desirableto have no proltuberance's on the socket or handle of the too In myinvention vthe outer end of the shank la is externally reduced indiameter and threaded 'as Vindicated at 1, and the outer end of thesocket in the shank is conically tapered as indicated at 1d. rlhisconical portion 1d is adapted to be engaged by a tapered split clampingring 2 whose normal internal diameter corresponds to the handle 4 sothat it can be slipped thereupon and its tapered end entered into thetapered porn tion ld of the socket. The clamping ring is preferably madeof steel and' is longitudinally split as at 2, and its outer broader end2 normally projects beyond the end of the shank l'L1 and is adapted toenter within an annular recess 5C in the end of a sleeve 5, which isadapted to be slipped upon the pipe 4 and neatly lits the same, exceptthe recessed part 5C which is internally threaded, as shown, to engagethe external threads on the part lC of the socket. The end 2a of theclamping member 2 engages the shoulder 5d at the inner end of thethreaded part 5, so that when the sleeve 5 is screwed onto the shank theclamping member 2 will be forced inwardly into the tapered end l1 of thesocket by the shoulder 5d engaging the end 2a as indicated in Fig. 2;and the tighter the sleeve 5 is screwed onto the shank the more forciblythe clamping ring is pressed into the recess of the socket 1d and theopposed tapered surfaces of the socket and clamping ring contract thelatter upon the handle Al and securely clamp it. The clamping ring notonly prevents turning of the handle in the tool but also forms anadditional bearing between the shank and handle at the outer end of thesocket, the handle having two rigid points of connection with the tool,z'. e., at the threaded end 4a and at the clamping ring 2.

The sleeve 5 is preferably made of steel and its outer end is tapereddown as shown at 5, to approximately the diameter of the handle, andthis prevents the tool from catching against the door frame or on otherobstructions when the operator is Withdrawing the. tool from the lire.

While the invention is particularly adapted for firing tools, it couldbe usefully employed with other tools or implements.

By this invention the handle is clamped to the tool in a most efficientand durable manner and will not become loosened nor break when heated.The clamping ring is fully protected While in use, and if desired theinvention can be used with a series of y interchangeable tools eachprovided With a socket corresponding to the socket la.

Havino' thus described my invention,

what l claim as nevi7 and desire to secure by to be slipped ontothehandle and into engagement with the internally tapered end of thesocket; and a sleeve adapted I to be slipped onto the handle and overthe said Vclamping ring and having an internally threaded recessadaptedy to engage the eX- ternally threaded portion of the shank,whereby when said sleeve 1s screwed onto the shank the said clampingring is forced 1 into the `tapered portion ofthe socket andl causedtofsecurely clamp the handle.

In testimony that I claim the foregoing as my own, aliiX my signature inpresence of two Witnesses.

FREDERICK C. KlFtAlVlERll Vitnesses LUCY M. BRENNER, GEO. GooDFELLoW.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,` Washington, D. C.

